Wide Band Sensing of Transmissions in FDM Signals Containing Multi-Width Channels

2. The method of claim 1, wherein at least one of the first and second channelizers separates the sampled FDM signal using polyphase decomposition.

4. The method of claim 3, wherein each of the polyphase filters in the polyphase filter bank is derived from a prototype filter by delaying and down-sampling the prototype filter by a factor M, where M is the number of channels in the FDM signal, whereby each polyphase filter has a different sampling phase relative to the other filters.

7. The spectrum sensing radio of claim 6, wherein each of the filters in the polyphase filter bank is derived from a prototype filter by delaying and down-sampling the prototype filter by a factor M, where M is the number of channels in the FDM signal, whereby each filter has a different sampling phase relative to the other filters.

8. The spectrum sensing radio of claim 6, wherein the phase shifting and combiner network is comprised of one of a discrete Fourier transform (DFT) or a fast Fourier transform (FFT) process.